Random data loss.

With out posting any code I was wondering if anyone here has been experiencing this kind of problem. I have a standard web from that PHP code then reads and saves the data into a MySQL DB. The problem is some of my users have had data lost somewhere in this process. The web site is www.thewishzone.com. It is a wish list site and the data that seems to be getting lost is the price of an item a user adds to their wish list. I can't seem to duplicate it here. However one user did have it happen twice in a short time period. They enter a valid price and after the record posts the price goes to zero. Any ideas? Chris W Gift Giving Made Easy Get the gifts you want & give the gifts they want this holiday season http://thewishzone.com